In this Swift playground book you’ll explore the physics of black holes in Albert Einstein’s theory of general relativity with three interactive simulations on your iPad. Discover the possible trajectories of test particles around a Schwarzschild source, explore the optical effects that occur when a massive object lenses a background light source and watch two black holes merge to hear the gravitational waves they produce in the process.

An online education A/B-testing framework I created in 2016 at the CERN webfest hackathon.

Finch aims to integrate into existing online education platforms to optimize their material for each student through an A/B-testing algorithm. We developed the idea and implemented the core functionality of this project from scratch during the CERN webfest 2016, that is an annual hackathon for the summer students at CERN in Geneva, Switzerland to develop science and humanitarian projects over a weekend.

This framework allows developers to replace their print logging by Evergreen’s versatile functions to dynamically adjust the verbosity of specific parts of their program, log to multiple destinations (such as files) with custom formatting and easily measure time. Evergreen logging is great to use in any Swift project, but particularly useful when developing a framework, since it gives its users granular control over the output the framework generates. Evergreen is inspired by Python’s excellent logging module and architected for Swift.

The lecture Software development for iOS gives an introduction to modern application development with an integrated development environment (IDE), the object-oriented programming language Swift and the construction of user interfaces, exemplary for mobile apps on the iOS platform.